NCERT Solutions for Class 9 Maths Chapter 13 Exercise 13.7 Solutions

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NCERT Solutions for Class 9 Maths Chapter 13 Exercise 13.7 Solutions are based on the volume of a right circular cone.

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Read More: NCERT Solutions For Class 9 Maths Chapter 13 Surface Areas and Volumes

Exercise Solutions of Class 9 Maths Chapter 13 Surface Areas and Volumes

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CBSE X Related Questions

  • 1.
    If \(\alpha, \beta\) are the zeroes of the polynomial \(p(x) = x^2 - 3x - 1\), then find the value of \(\frac{1}{\alpha} + \frac{1}{\beta}\).


      • 2.
        If the pair of linear equations : \( a_1x + b_1y + c_1 = 0 \) and \( a_2x + b_2y + c_2 = 0 \) is consistent and dependent, then

          • \( \frac{a_1}{a_2} \neq \frac{b_1}{b_2} \)
          • \( \frac{a_1}{a_2} = \frac{b_1}{b_2} = \frac{c_1}{c_2} \)
          • \( \frac{a_1}{a_2} = \frac{b_1}{b_2} \neq \frac{c_1}{c_2} \)
          • \( \frac{a_1}{a_2} = \frac{b_1}{b_2} = \frac{c_1}{c_2} \)

        • 3.
          The value of \(p\) for which roots of the quadratic equation \(x^{2} - px + 6 = 0\) are rational, is

            • \(1\)
            • \(-5\)
            • \(25\)
            • \(\sqrt{5}\)

          • 4.
            If \( \alpha, \beta \) are the zeroes of the quadratic polynomial \( px^2 + qx + r \), then find the value of \( \alpha^3\beta + \beta^3\alpha \).


              • 5.
                If the quadratic equation \(9x^2 + 8kx + 16 = 0\) has real and equal roots, then the value of k is

                  • 3
                  • –3
                  • –4
                  • \(\pm 3\)

                • 6.
                  \(ABCD\) is a parallelogram such that \(AF = 7 \text{ cm}\), \(FB = 3 \text{ cm}\) and \(EF = 4 \text{ cm}\), length \(FD\) equals

                    • \(\frac{21}{4} \text{ cm}\)
                    • \(\frac{28}{3} \text{ cm}\)
                    • \(\frac{12}{7} \text{ cm}\)
                    • \(5.5 \text{ cm}\)

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